Lml cracked piston. 1,272 g on the LB7/LLY and 1,349 g on the LBZ/LMM).

Lml cracked piston If anyone figures out the cause of this issue, please let me know. I'm gonna cut both of them down the middle, and see if there's any difference in them. Any thoughts on how much of a tune over stock is to much for the LMM and any other possible causes, just maybe it wasn't the programmer. 2018 Solitude 310GK fifth wheel with a 12' Haulmark tag trailer to haul toys in. Here is what i have ordered so far Parts: Both Head Gaskets - Grade C Stock Head Bolts Some Misc Gaskets Piston Rings All Rod Bearings All 8 New Injectors But my question is can i just go stock LML piston again? Jan 31, 2014 · After all the researching on cracked pistons that I have done there are no solid answers. The truck is a 2011 LML with 172,000 miles on it. After installing a few found that the crank counter weights are hitting bottom of the pistons. Emissions deleted for the last 100xxx miles with an h&s set on tow. It lives in front of a fairly large enclosed trailer. I did head gaskets on it 10k miles ago and everything looked good. Sure enough #6 was a dead hole. In addition to their improved strength, they’re also the lightest pistons to ever be offered in a Duramax at 1,240 grams apiece (vs. Nov 17, 2017 · Just because cracked pistons are more common than connecting rod failures on the LML Duramax, doesn’t mean that’s always the case. Cracked Piston(s)—LBZ/LMM. I was told numerous times that piston production was moved overseas around 2013. Half way there it started acting up. Nov 25, 2024 · Cracked piston. Jan 23, 2022 · Hey guys need some help. This will be a multi part series as Apr 19, 2017 · So my friend has a lbz dmax with 120k miles on engine and broke and cracked #5 while running 22psi on a 4094stg2 turbo. Less than . BIOTEC · Registered. All four on one side and one on the other side. Jump to Latest 21 - 23 of 23 Posts. Even though the ’06-’10 Duramax's are equipped with slightly stronger, forged-steel rods than what was used in the ’01-’05 engines (LB7 and LLY), the problem moves upward, into the pistons, on the LBZ and LMM engines. If you had a single piston failure, you should have had a single balance rate way out in left field. We are now at our longest stop of our trip in Halifax. Thanks Anthony Mar 19, 2018 · So now i am just going to pull the motor out at this point because i am afraid of the passenger side being cracked as well. (1037Nm ) @ 1600 RPM • Pistons will be cracked in the lip area, or a hole in the Apr 17, 2017 · Lml with 50hp tune. It drives Oct 13, 2016 · I have a piston out of my '11 dually, a piston that came out of a set of bank-specific pistons, and also have the one that went bad out of my '15. I took that same turbo and installed it on my lbz dmax with 225k miles and would see 36psi and broke my #3 piston within days. You likely took a few thousands of km's off the life of the cp3 and injectors. After 2 months haggling with Chevy, they replaced engine under warranty "supposedly"! Then @ 60k on "new" engine I lost 50% power while pulling 30' flatbed gooseneck with 300 wood pallets on. Mar 3, 2007 · I knew the classic signs of a hole in a piston so I pulled glow plugs and ran a compression test. The first full day here I spent the day on the phone trying to find someone to look at the truck. When they pulled it apart it had 5 cracked pistons in it. It does not have a lot of blow by, the oil fill cap sits on the oil fill tube without moving but it does have a little bit of smoke that comes out of the oil fill tube and the PCV. Had them scope the cylinder and found a cracked piston. 1,272 g on the LB7/LLY and 1,349 g on the LBZ/LMM). Both trucks are tuned by different people. Cracked piston scenarios can do considerable damage to cylinder walls. All 3 trucks failed while towing, but nothing crazy. Both 16's are in the shop now. I have 18k in my motor now with the fuel system, have to say first GM Ive been upset with, bought a new 16 ram that's going to be my hauling truck now Mar 30, 2014 · Well im pretty sure i have a cracked piston. Aug 13, 2015 · Low or no compression. Got a set of mahle motorsports pistons part # 930036055. My personal truck is a 2007 GMC Sierra LBZ CCSB 4x4 with HSP piping, Danville 68stage2r turbo, PPE manifolds and up-pipes, Limitless 1078 TC, Stock trans with Trans Go Jr. In the photo above, an LML-equipped ’13 Silverado making a dyno validated 808-rwhp on the factory (low-mile) rotating assembly ended up with several bent rods and a corresponding drop in compression. Get the owner some tunes from Kory this time. Aug 22, 2018 · I have a 2016 Chevy 3500 & @ 59K # 3 piston cracked & popped 1/4" hole in top of piston. 0 Fords. May 19, 2013 · I was headed to Ocean City, MD friday for the car cruise weekend and it sounds like I cracked a piston. I have never heard of an lml piston crack efilive. Shut it down and had oil blowing out the oil fill tube and smoke coming out. 2015 LML Silverado 3500 SRW High Country CC SB 4x4 Join along as I pull the engine on my 2016 LML Duramax to find out which piston is cracked and how much damage there is. They were delipped. Only modification was straight pipe . 1 2. Tags lml lml engine. My question is this. Do I have 4 cracked pistons? And what could have caused this one to crack. Had a mini maxx and exhaust. JDPlowboy I posted the actual weight difference on here back in 2010 under my Cracked Piston thread. I belive they are all gonna have broken or cracked pistons also. Any ideas would be greatly appreciated. Joined Jan 18, 2010 · 685 Posts #21 Jul 24, 2014 · 2005 Silverado EC/SB, LLY, 4WD, Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w Jun 8, 2012 · We no longer have any LML's in our fleet (at 1 point we had 45 samples), but I don't recall an engine failure due to a cracked piston. We have pulled the engine, stripped it, pulled the head to find a Crack 3/4 of the way down the center of the piston length wise with the block. Sep 14, 2024 · Unfortunately, that sounds like a cracked piston or hole in the piston. Truck has 260xxx miles. May 23, 2023 · LML - FASS 165, CP3 Swapped, Juggernaut 750 Allison (Mike L), Deleted (Only Way to Go), 3" MBRP DP, 5" Exhaust (Cracked #7 Piston on 5/20/23) - REBUILD IN PROCESS LB7 - Old Farm Truck taken and lifted, tuned by Kory Willis (No hot tunes just a SOTF with no coal rolling), brand new CP3, Originally bought as a project, daily until the LML is rebuilt Aug 26, 2020 · Hello everyone I have a 2005 LLY Duramax and I am worried its got a cracked piston but im not sure. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different Nov 24, 2018 · 4. Feb 6, 2014 · It could either be cracked piston or scored cylinder walls. I have a basic understanding about diesel engines but I'm no mechanic. LML came in for head gaskets. Apr 2, 2015 · Wondering if anyone has seen this on a regular basis. Here's the symptoms at 140000 HARD miles: Cruising at 60 everything's normal, I accelerate half throttle up to 90mph and let off and slow down a little bit, when I get back on the Nov 15, 2024 · The LML pistons are inherently weak so a better piston will definitely last better but stupid tuning will still blow them. Dec 31, 2023 · Whats up! I'm in a rough spot with my truck, I definitely cracked a piston or more on my way to go duck hunting. and Ratio Tech kit. :eek: Jun 15, 2015 · The balance rates being good put the cracked piston pretty far down the list for me. Rebuilding an 2015 lml that had cracked pistons. Here is my take poor quality control, bad castings however you want to say it Mahle is making bad pistons here is my proof. Injector 8 balance was around 12 and others were fine switched that injector with number 7 and sti the same balance rate on cylinder 8 so i checked Jan 15, 2006 · I am potentially dealing with a head gasket and cracked piston issue on my LML Duramax in the middle of a cross-country trip with my fifth wheel trailer. What actually causes the pistons to break cylinder Nov 11, 2017 · Once a crack spreads across the length of the top of the piston, this is often the result. . Lightest Duramax Rod Jan 4, 2010 · I've been reading a post on Diesel place, about a guy who had to have his truck towed in because of a cracked piston running his PPE programmer on his LMM. Where did I go wrong or how do I fix. Also a ton of smoke coming out the block vent (I have mine vented to the ground). Dec 21, 2018 · For those in the aftermarket, this means the LML is much less prone to cracking pistons at higher horsepower levels than the LBZ and LMM. The 2011 LML was the most serviced commercial truck we have ever owned (25 samples), emissions being the most common problem, even above the 6. Nov 20, 2015 · Well, last week my truck cracked a piston. Cracked piston scenarios lead to excessive crankcase pressure (blowby), a miss in the engine, and Jul 27, 2019 · I have a 16, and my partner has a 16, and a 15. Once I pulled over it almost had a lope at idel. The 15 was definitely a cracked piston. Check the compression on that cylinder and another easy to get to and see how they compare. An overbore was definitely needed to clean up this LBZ’s number 5 cylinder. 3 of the 4 pistons on the passenger side have some degree of cracking. Apr 27, 2007 · A cracked piston is usually going to allow oil to enter the combustion chamber, which would mean a lot of smoke. Due to my CP4 self destructing itself, took out all 8 injectors, #5 piston, trashed #5 cylinder. • LML — Sierra HD and Silverado HD 397hp (294kW) @ 3000 RPM, 765lb-ft. B. 2023 GMC Denali 3500 DRW, Pearl White, Banks I dash and Deringer, 255/80R17 Toyo R/T Trail on spare set of aluminum wheels for winter. Driving home and it started running rough white smoke everywhere and blowing oil out pcv hose. I have abused some lml pistons badly. Jan 23, 2014 · Just saw this on FB from Blackout Performance. 100 material under the bowl area at the oil jet hole this appears to be Jan 23, 2014 · The only cracked lml pistons I have heard of were on trucks with H & S tuners. ubeog rqegpt tri beaqm gnlnpxv alesib ydxrwvvz nplmph eso nwbdtzd rwh vzhnbevj mndd ytyms jgwwhz